CAS: New simplification commands

[compsystems]

Expressions converting to the form x + y * i are easier to read, I suggest please that the CAS incorporate the following commands

PHP Code:

#cas
  collectxyi(exprIn):=
  begin
   return normal(re(exprIn)) + normal(im(exprIn))*i;
  end;
#end 

#cas
  collectxyi2(exprIn):=
  begin
   return re(exprIn) + im(exprIn)*i;
  end;
#end 


collectxyi( (1+i/(sqrt(2)+1))*sqrt(sqrt(2)+1)/(sqrt(2)) ); ->
(√(2)*√(√(2)+1)/2) + (√(2)*√(√(2)-1)/2) * i